Classification
| Field | Value |
|---|
| Incident type | Fire / Explosion |
| Severity | High |
| Region | Italy |
| Location | Porto Torres, Sardinia, Italy |
Vessel Details
| Field | Value |
|---|
| Vessel name | Panam Serena |
| Vessel type | Type 2 chemical tanker |
| Flag state | Bahamas |
| IMO number | 9282687 |
| Official number | 8000650 |
| Call sign | C6SY9 |
| Year built | 2003 |
| Length overall | 118.37 m |
| Gross tonnage | 6,522 |
| Crew complement | 15 |
| Cargo | Benzene and Cut C6 |
Incident Details
| Field | Value |
|---|
| Date and time | 2004-01-01 at approximately 11:55 local time (UTC+1) |
| Operation | Cargo discharge at Porto Torres |
| Coordinates | 40.8370, 8.4013 |
| Fatalities | 2 crew members |
| Injuries | 1 crew member, the chief mate |
| Missing | |
| Vessel outcome | Constructive total loss |
| Direct damage | Catastrophic damage to the vessel and extensive damage to the terminal jetty. |
Key facts
- The vessel arrived at Porto Torres on 31 December 2003 with Benzene and Cut C6. Benzene discharge was complete, while C6 discharge was nearing completion.
- The first and reportedly most violent explosion occurred as the cargo-deck watch was changing. The duty and relieving seamen were on the main deck and were killed in the explosions.
- The master and the remainder of the 15-person crew escaped from the aft accommodation area via the stern freefall lifeboat after it launched automatically.
- The BMA could not identify the exact initial ignition source because the vessel was catastrophically damaged.
Narrative
Panam Serena was alongside at Porto Torres and discharging cargo after arriving from northern Europe. The cargo included 2,091 tonnes of Benzene and 6,300 tonnes of Cut C6. The terminal connected the cargo and vapour-return pipelines and normally connected a ship-to-shore electrical continuity bonding cable, although the BMA found uncertainty about whether that cable had been connected correctly.
At approximately 11:55 on 1 January, near the end of the discharge, the vessel was shaken by the first of approximately four violent explosions. The explosions occurred amidships in the cargo-tank area and were followed by an intense fire. Two seamen on the main deck were killed, and the chief mate was injured. The rest of the crew escaped over the stern into the water and then into the stern freefall lifeboat, which had launched automatically. Shore-based emergency services brought the fire under control, but the damage to the vessel was catastrophic and the terminal jetty was also damaged.
Sequence of events
| Date/time | Event |
|---|
| 2003-12-31 08:50 local time | Panam Serena was all fast at Berth 18, Platform B, Porto Torres. |
| 2003-12-31 16:00 local time | C6 discharge began. |
| 2003-12-31 18:00 local time | Benzene discharge began. |
| 2004-01-01 approximately 11:55 local time | The first and largest explosion occurred during the cargo-deck watch change. |
| 2004-01-01 after 11:55 | Further explosions and an intense fire damaged the vessel and terminal jetty; the crew escaped in the stern freefall lifeboat. |
| After the casualty | Shore-based emergency services brought the fire under control, and the vessel was later declared a constructive total loss. |
Contributing factors
| Factor | Evidence status | Description |
|---|
| Static or electrical discharge | Official conclusion (most probable) | The BMA concluded that the most probable initial cause was a static or electrical discharge sufficient to ignite a volatile Benzene/Cut C6 vapour mixture. |
| Volatile cargo vapour environment | Confirmed finding | The vessel was discharging Benzene and Cut C6, and the cargo tanks contained vapours when the explosions occurred. |
| Ship-to-shore bonding cable condition and connection | Confirmed finding | The report records uncertainty about whether the cable was connected correctly, internal corrosion and poor maintenance of the cable, and uncertainty among terminal personnel about who had made the connection. |
| Cargo stripping and possible agitation | Suspected contribution | The BMA identified stripping and possible water, air, or inert-gas agitation as mechanisms that could generate static, but it could not establish every operational detail at the time of ignition. |
Investigation
The Bahamas Maritime Authority investigated the casualty and issued its report in April 2006. The report states that the exact cause of the initial explosion could not be identified because of the catastrophic damage. Its most probable-cause conclusion was a static or electrical discharge igniting a volatile vapour mixture. The BMA also found that electrical continuity and bonding guidance had not been adequately followed by the terminal and that the crew had not verified the bonding cable's condition and connection.
The report does not establish whether the bonding cable was connected correctly at the time of the casualty, whether air or nitrogen was used during the discharge operation, or the precise point and mechanism of the initial discharge. It provides no economic loss estimate.
References
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